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solution to nonlinear equations use secant method

用于读取心电信号，为心电信号后续的处理，应用做准备(Used to read the ECG and to prepare for the subsequent processing of the ECG signal, application)

层次分析法（AHP），可以用来对于选择学校选择职位之类的事情进行决策(Professor Satty proposed AHP)

说明：  ：针对MP3 编码方式和帧结构进行分析，利用帧中的比例因子提出了一种压缩域水印算法。算法通过引入帧变化分析步 骤，很好地实现了水印的自适应嵌入。对于不同的系统要求，还可以通过修改门限信噪比的值SNRlim按需进行水印嵌入，使算法 具有更大灵活性。同时在牺牲一定的嵌入空间前提下，实现了水印信息的自同步。实验表明，对于不同风格的音乐，该水印算法 具有很好的不可听性。(In this paper，the encoding method and the frame structure of MP3 are expounded in detail，a watermark algorithm is proposed based on the scale factor in MP3 frame.By introducing the step of frame altering analysis，the algorithm can realize that watermarks is embedded adaptively.By modifying threshold SNRlim（the ratio of signal to noise），the algorithm can meet different requirements of some system，that is what enable the algorithm to have a bigger flexibility.Based on expense of some embedding positions，the watermark can be embedded with self-synchronization.The experiment results show this algorithm can get a good audio effect with various types of audio.)

扩频通信中的捕获问题，用GOLD码进行扩频， PN码相位捕获，利用捕获的相位，接收机产生偏移的GOLD码，进行解扩和误码率计算(Spread Spectrum Communication capture issue, GOLD spread spectrum code, PN phase acquisition. The capture phase, the receiver have offset the GOLD code for despreading and bit error rate calculation)

飞控程序加仿真模块 简单实用 可以控制高度的简单程序(Flight Control program plus simple and practical simulation module can control the height of a simple program)

数字信号处理的各主要部分知识点的MAtlab实现(Digital signal processing point of the main part of the knowledge to achieve MAtlab)

从官网下载的工具箱，用于混沌系统模拟，可画相轨迹，求Lyapunov指数，画分岔图等。(Downloaded the official website of the kit, for analog chaotic system, can be painted with track seeking Lyapunov exponent, Videos bifurcation diagram.)

股票预测，用于大家的股票预测，程序很精良，是大家的不错的一个选择。呵呵(Stock forecast, used for everyone s stock forecast, and the program is very excellent, is everyone s a good choice. Ha ha )

一个使用MATLAB的例子，在电机调速方面的应用。(an example of the use of MATLAB, the motor on the application.)